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1 /*
2  *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
3  *
4  *  Use of this source code is governed by a BSD-style license
5  *  that can be found in the LICENSE file in the root of the source
6  *  tree. An additional intellectual property rights grant can be found
7  *  in the file PATENTS.  All contributing project authors may
8  *  be found in the AUTHORS file in the root of the source tree.
9  */
10 
11 #ifndef WEBRTC_MODULES_AUDIO_CONFERENCE_MIXER_SOURCE_AUDIO_FRAME_MANIPULATOR_H_
12 #define WEBRTC_MODULES_AUDIO_CONFERENCE_MIXER_SOURCE_AUDIO_FRAME_MANIPULATOR_H_
13 
14 namespace webrtc {
15 class AudioFrame;
16 
17 // Updates the audioFrame's energy (based on its samples).
18 void CalculateEnergy(AudioFrame& audioFrame);
19 
20 // Apply linear step function that ramps in/out the audio samples in audioFrame
21 void RampIn(AudioFrame& audioFrame);
22 void RampOut(AudioFrame& audioFrame);
23 
24 }  // namespace webrtc
25 
26 #endif // WEBRTC_MODULES_AUDIO_CONFERENCE_MIXER_SOURCE_AUDIO_FRAME_MANIPULATOR_H_
27